I've been doing at least 10 burpees every morning since we started the burpee challenge. (One day of 10, actually, and the rest at least 30.) I've also spent a lot of time thinking, "Is this the right way to do a burpee?" and, "Is this the best way to do a burpee?"

Finding clear, definitive facts about healthy exercise can be difficult. The exercise industry is a multi-billion dollar business, built partially on selling gadgets and supplements to people desperate to lose weight or look attractive. Meanwhile, good workout plans and simple truths lurk in the background waiting for their time to shine. All of this results in lots of misinformation about exercise. We're taking some of those commonly-held exercise myths to task, and we have science to back us up. Let's get started.

Five people have recently told me they were going to "try keto" — the most recent after gushing about a mutual friend who has been doing keto, aka the popular ketogenic diet, and getting awesome-looking results. You've probably heard rumblings about keto, but what the heck is it? And is it too good to be true?

Hey friends, how's the burpee challenge going? Today I've got some modifications that will be perfect if the burpees haven't been agreeing with you, or if you're doing fine but you'd like to rope in a friend who has some doubts.

Core exercises will build up your abs, but they do nothing for the layer of fat on top of them. Likewise, no leg exercise can give you slimmer thighs. And yet headlines and tweets about shrinking specific body parts abound -- even when the articles themselves contradict the headline.

Sure, fine, burpees are tough and we hate them. But they are a phenomenal full-body workout, and it won't kill you to try just one. Maybe two. (Or 10. You know where this is going.) We're all going to be so strong by the end of the month!

You might think pushups are a relatively straightforward exercise. You would be wrong. There are at least one hundred different ways to do pushups, and this infographic shows you all of them - you can also watch instructional videos for each and every one.

We've all seen those transformation photos of people going from pufferfish-like bellies to enviously defined abs. You may have mused, "I wish I could get to that 'After' picture, too." Oh, but you can. Without actually being close to that great a shape, in fact. It's not honest, but marketers do it, and hot damn, you will look fabulous.

You can get any level of workout from our fitness trail challenge, no matter what equipment you find. We've already discussed a few ways you can modify the exercises to be easier, if that's what you need, but now let's talk about how to get even more of a challenge.

I'm not into watches or wristbands, but for the last few weeks I've been wearing a fitness tracker on my finger. It knows how long I sleep and detects when I walk or run, and all I've gotta do is wear it like jewellery and forget about it.

You spend two minutes in the morning and two at night brushing your teeth. Instead of just standing around, make even better use of that time by incorporating a few simple movements for balance, flexibility and strength.

Like most guys of a certain vintage, I have mixed feelings about my body. Staying lean and not surrendering to the siren’s call of the dreaded 'Dadbod' is a key concern. But then so is building and maintaining enough muscle so that I can keep up with the young bucks on the soccer field or in the gym.

One of the main keys to success is your diet. You need a meal plan that's high in healthy carbs, fats and proteins. More importantly, it needs to be easy to prepare and affordable - so you'll actually stick to it.

If you've ventured out looking for fitness trails for the Lifehacker Fitness Challenge, you may have noticed some mysterious unlabelled equipment. What are you supposed to do with this bar near the ground? This slanted bench? Here are your answers.

It's a beautiful day and we're going on an adventure! For the May instalment of the Lifehacker Fitness Challenge, your mission is to find a fitness trail (sometimes called a parcourse) near you - they're often hiding in plain sight.

The best way to prevent your workout clothes from stinking is to rinse them out immediately after sweating into them. Since you're taking a shower already, that's easy. But what to do with those sopping wet garments?

I really hate running. I've always hated running. Every time I decide to give running a try (again), I think about how much I'd rather be biking, lifting heavy things, or doing anything else (except squats). However, when I do go running, I use the free C25k app to try and guide me toward longer and better runs.

However you get your workouts in, you might eventually reach a point where you want to keep track of them so you know how many calories you burn, what distances you travel, and what heart rate you hit while exercising. All of which is very easy to keep tabs on if you own an Apple Watch.

Many of us have done a little bit of Pilates at some point; Pilates-style moves are found in plenty of workouts that incorporate yoga or bodyweight exercises. But it's another thing to step into an actual Pilates studio and find yourself face-to-face with the famous reformer.

Ever wanted to hang off a big hog with your 24-inch pythons like our mate Hulk Hogan, brother? Of course you have, brother. If you've ever wondered about which exercises you need to do to grow those biceps, triceps and forearms - look no further, brother. Here are the best exercises to master those arm muscles.